OJS subscriptionblock error when adding logo or image

On OJS, after I upload an image in the Website Settings section of the admin panel, I get the following error message: The subscriptionblockplugin block can not be found.

That is not a plugin that we use. Can the dependency to it be removed?


  • Log into the journal
  • Go to Settings - Website - Appearance - Setup
  • Upload a Logo, Journal thumbnail, or Homepage Image
  • Click Save
  • Notice the error appear